NASA scientists have launched a spacecraft to test out new technology that could stop the Earth being hit by a deadly asteroid.
By crashing it into a small asteroid, they hope to be able to perfect a technique of crashing it into any large object that is heading towards our planet, changing the course of its trajectory.
Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí https://www.youtube.com/channel/skynewsespanol
TV channel: Sky News
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